Stadium: Pista 8 Round: 25 Ground: Clay
| ATP Geneva Qual | 2016/05/15 10:30 | Roberto Ortega-Olmedo v Johan Nikles | 6-2,7-6 |
| ITF - M25 Vic | 2021/05/18 09:35 | Johan Nikles v Miguel Damas | 6-3,7-6 |
| ITF - M25 Vic | 2021/05/17 09:00 | Johan Nikles v Maxime Mora | 6-2,6-2 |
| ITF - M15 Valldoreix | 2021/05/13 08:00 | Facundo Diaz Acosta v Johan Nikles | 6-4,6-2 |
| ITF - M15 Valldoreix | 2021/05/12 12:05 | Johan Nikles v Pol Toledo Bague | 6-4,1-6,6-3 |
| ITF - M15 Majadahonda | 2021/05/09 10:00 | Nuno Borges v Johan Nikles | 4-6,3-6 |
| ITF - M15 Majadahonda | 2021/05/08 09:45 | Oriol Roca Batalla v Johan Nikles | 6-3,4-6,3-6 |
| ITF - M15 Majadahonda | 2021/05/07 08:30 | Johan Nikles v Pedro Vives Marcos | 6-0,4-6,7-6 |
| ITF - M15 Majadahonda | 2021/05/05 07:00 | Luca Van Assche v Johan Nikles | 1-6,4-6 |
| Challenger Salinas 2 | 2021/04/27 17:50 | Roberto Ortega-Olmedo v Tim Van Rijthoven | 6-7,7-6,6-7 |
| Challenger - Salinas | 2021/04/22 15:00 | Roberto Ortega-Olmedo v Altug Celikbilek | 6-1,4-6,4-6 |
| Challenger - Salinas | 2021/04/20 15:50 | Nick Chappell v Roberto Ortega-Olmedo | 3-6,2-6 |
| Challenger - Oeiras | 2021/04/05 12:30 | Carlos Gimeno Valero v Roberto Ortega-Olmedo | 6-1,6-1 |
| Challenger - Oeiras | 2021/04/01 15:30 | Gastao Elias v Roberto Ortega-Olmedo | 3-6,6-1,6-3 |
| Challenger - Oeiras | 2021/03/30 15:30 | Roberto Ortega-Olmedo v Ernesto Escobedo | 7-5,6-4 |
| ITF - M25 La Nucia | 2021/03/17 10:45 | Yan Bondarevskiy v Roberto Ortega-Olmedo | 6-3,6-3 |
| Challenger - Petrohrad | 2021/03/11 08:00 | Mirza Basic v Roberto Ortega-Olmedo | 6-1,7-6 |